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Fabrication of novel thin-film composite membrane based on ultrathin metal-organic framework interlayer for enhancing forward osmosis performance

引用

Chinese Chemical Letters 2023年第12期34卷 305-309页

作者： Hao Liu Bo Li Pin Zhao Rongming Xu Chuyang Y.Tang Weilong Song Zunaira Habib Xinhua Wang Jiangsu Key Laboratory of Anaerobic Biotechnology School of Environmental and Civil EngineeringJiangnan UniversityWuxi 214122China Shenergy Environmental Technology Co. Ltd.Hangzhou 31100China State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Department of Civil Engineering The University of Hong KongHong Kong SAR 999077China Institute of Environmental Sciences and Engineering School of Civil and Environmental EngineeringNational University of Sciences and TechnologyIslamabad44000Pakistan Department of Chemistry Rawalpindi Women UniversityRawalpindi 46300Pakistan Jjiangsu Collaborative Innovation Center of Technology and Material of Water Treatment Suzhou University of Science and TechnologySuzhou 215009China

To improve operation efficiency,an interlayered thin-film composite forward osmosis(iTFC-FO)membrane was designed by introducing an ultrathin and porous interlayer based on aluminum tetra-(4-carboxyphenyl)porphyrin(a stable metal-organic framework nanosheet,Al-MOF).Surface characterization results revealed that Al-MoF spread evenly in the macro-porous substrate,and provided a flat and smooth reaction interface with moderate hydrophilicity and uniform small *** resultant polyamide(PA)layer had a thin base(without intrusion into substrate)and crumpled surface(with abundant leaves).The leaves size and cross-linking degree of PA layer firstly increased and then decreased with the Al-MOF *** to the original membrane,the iTFC-FO showed an enhanced water permeability and a reduced reverse sodium flux in both modes of active layer facing feed solution(ALFS)and active layer facing draw solution(AL-DS).To be specific,the specific reverse sodium flux(reverse sodium flux/pure water flux)decreased from 0.27 g/L to 0.04 g/L in the AL-FS mode,while from 1.36 g/L to 0.23 g/L in the AL-DS mode with 2 mol/L NaCl as ***,the iTFC-FO maintained high stability and high permeability under high-salinity and contaminated *** study offers a new possibility for the rational fabrication of high-performance TFC-FO membranes.

关键词： Thin-film composite embrane Forward osmosis 2Dmetal-organic ramework Porous interlayer membrane prformance

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